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TIL Volcano Surfing or Volcano Boarding, is a sport performed on volcano slopes. Potential dangers include falling off and getting cut by the rough volcanic ash, breathing poisonous gasses, contracting histoplasmosis (otherwise known as 'caver's disease'), or being hit by flying molten lava

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kJBG5 TIL Roald Dahl, the author of 'Charlie and the Chocolate Factory' and 'Matilda', was a flying ace in WWII. He shot down at least five fighters (likely more) with little to no formal military training.
9Yv57 TIL Due to overfishing, less than 10% of the global fisheries catch now comes from the open ocean. An end to high-seas fishing would in effect create a vast marine protected area in nearly 2/3 of the world’s oceans, allowing fish stocks to rebuild. With the ban, fishermen would actually catch more.
DQnXV TIL that Muhammad Ali threatened to sue the producers of a simulated fight between him and Rocky Marciano, which showed Marciano as the winner. Ali later dropped the lawsuit after finding out that a version showed in Europe depicted him winning.
D8Vp TIL in Japan, if someone is photographed or filmed while handcuffed, their hands have to be pixelated when used on TV or in the newspapers due to the implied guilt being pictured in handcuffs.
rb6W TIL the Earth’s mantle is so extremely viscous that it takes at least 50 million years to complete a convection circuit. The mantle has only moved an average of 18 feet since the pyramids were built